Variable-speed and reversing mechanism.



No. 892,325. I PATENTED JUNE 30, 1908. W- ,J. & E. MQSTEINLB.

VARIABLE SPEED AND REVERSING MECHANISM.

APPLIO'ATION FILED APR. 16, 1908.

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1": Hamil: Pntns co No. 892,325. PATENTED JUNE 30, 1908.

W. J. & E. M. STEINLB. VARIABLE SPEED AND REVERSING MECHANISM.

APPLICATION FILED APR. 16, 1906.

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VARIABLE SPEED AND REVBR APPLICATION I i 1 Hum illmhllhuli No. 892,325.PATENTED JUNE 30, 1908. W. J. & E. M. STEINLE. VARIABLE SPEED ANDREVERSING-MECHANISM.

APPLICATION FILED APR. 16, 1908.

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lllll PATENTED JUNE 30, 1908. w. J. & E. STBINLE.

' VARIABLE SPEED AND REVBRSING MECHANISM.

APPLICATION TILED APR-16,1906- 'l SHEETS-SHEET 6,

No. 892,325. PATENTED JUNE 30, 1908. W. J. & E. M. STEINLE. VARIABLESPEED AND REVERSING MECHANISM.

APPLICATION FILED APR.16, 1906.

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No. 892,325. PATENTED JUNE 30, 1908. W. J. & E. M. STBINLB. VARIABLESPEED AND REVE'RSINGMEOHANISM.

APPLICATION FILED APR. 16, 1906.

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UNITED sTATEs PATENT OFFICE.

WILLIAM J. STEINLE AND EDWARD M. STEINLE, OF CHICAGO, ILLINOIS.

VARIABLE-SPEED AND REVERSING MECHANISM.

Specification of Letters Patent.

Patented June 30, 1908.

Application filed April 16, 1906. Serial No. 311,922.

To all whom it may concern:

Be it known that we, WILLIAM J. STEINLE and EDWARD M. STEINLE, citizensof the United States, residing at Chicago, in the county of Cook andState of Illinois, have invented certain new and useful Improvements inVariable-Speed and Reversing Mechanism, of which the following is aspecification.

Our invention relates to improvements in variable speed and reversingmechanism; and the object of our improvements is to provide improvedmeans for increasing or decreasing the speed of the propelled mechanismwithout changing the speed of the engine, motor or other propellingmechanism.

A further object of our invention is to provide a speed regulator havinga non-rotatable expanding and contracting pulley or drum.

In the drawing-Figure 1 is a side elevation view of the preferred formof our improved variable speed and reversing mech anism; Fig. 2 a sideelevation view of a modified construction of same; Fig. 3 a view takenon the line 3-3 of Fig. 2; Fig. 4 a view taken on the line 4-4 of Fig. 1or Fig. 2; Fig. 5 a cross sectional view taken on an enlarged scale onthe line 55 of Fig. 1 or Fig. 2 between the mechanism mounted on theinner face of the non rotatable circular frame 7, and the mechanismmounted on the adjacent face of the rotatable disk 35'; Fig. 6 a crosssectional view taken on an enlarged scale on the line 66 of Fig. 1 orFig. 2 between the same mechanism specified in above description of Fig.5; Fig. 7 a detail view, taken on an enlarged scale, showing fragmentsof the shaft, the large gear wheel, the large disk, a small pinion and ascrew key employed in the machine of modified construction shown in Fig.2; Fig. 8 a view of the inner face of the spiral worm gear shown on anenlarged scale; Fig. 9 a side view taken on an enlarged scale of one ofthe slidable racks detached from the circular frame shown in Fig. 6;Fig. 10 a view of the right hand endof Fig. 9; and Fig. 11 an outlineview of portions of the machine of preferred form shown in Fig. 1.

Referring to the drawings in detailThe reference numeral 1 representsthe main frame having bearings or boxes 2 and 3 for the main shaft 4.Secured on the end of the shaft 4, adjacent to box 2, is a pulley 6which may be of any desired construction and to whlch power, foroperating the mechanism,

may be applied, or the said power may be applied to shaft 4 in any othermanner desired. Located adjacent to the inner end of the box 2 is acircular frame 7 secured to the main frame 1 by means of the machinescrew 8 and the braces 9 and 10, and having a hub 11, and provided onthe same side with an annular groove 12. Rotatably arranged in saidannular groove is a ring gear 13 provided on its inner face with aspiral worm 14, and provided on its opposite or outer face with cogs 15,and secured in place by means of a collar 16 secured on the hub by a setscrew 17. Secured to the frame 7 by means of the clamp 18 and machinescrews 19 is a beveled pinion 20 for engaging and rotating the said ringgear 13, and having an upright stem 21 provided at its upper end with acrank or handle 22 for rotating said pinion 20. Formed in the oppositeside of the circular frame 7 are several diverging channels 23 allcommunicating with the annular groove 12 in the opposite side of theframe 7, and each formed with the grooves 24. Slidably mounted in eachof said channels 23 is a rack 25 provided on its inner face with teeth26 for engagement with the spiral worm 14, and provided on oppositesides with flanges 27 slidably arranged in the grooves 24, and eachprovided near its outer end with a jut 28 projecting from its outer edgeor face and forming a jaw. Said racks are held in place by metal plates29 which are secured to the face of the frame 7 by screws 30, and whichhave their edges overlapping the rack flanges 27. In Fig. 6 of thedrawing one of the racks and two of the plates 29 are removed. The saidjaws form a drum around which the planetary link chain 31 travels. Twoof said jaws are provided with teeth or sprockets 32 to engage the linksof the chain and prevent the latter from slipping when it travels aroundthe drum. By rotating the ring gear 13 the racks 25 and their jaws arecaused to move to or from the center simultaneously, therebyproportionately decreasing or increasing the size of the said drum, thepurpose of which contraction and expansion will be later explained.Inasmuch as the two jaws which carry the teeth 32, are located onopposite sides of the frame 7 it is apparent that the chain will at alltimes be engaged by one or the other of these jaws and that it will notbe engaged by both long enough at a time to interfere with the expansionor contraction of the drum.

. a grooved pulley 46 for said chain; a stra or,

a lobe gear 36 pivoted to the disk 35 at..37,.

and having two peripheral faces provided respectively with teeth .38 and39 the latter meshing withthe cogs of thepinion 34 a notched shoe 40carried by said lobe and secured thereto with screws 41, and having itsopposite edge adapted to engage theinner face of the rack jaws as willhereinafterbe more fully described; a lobe 42 pivoted to the disk 35,and provided with teeth'43. meshing with the teeth 38 of the lobe 36,and having an arm44 provided at its outer end with a stud 45 on whichthere is rotatably mounted keeper 47 for said arm; twogrooved pul eys,48 and 49 rotatably mounted respectively on studs 50 and 51, and adaptedto carry said chain; and a rotatable-shaft. 52 having secured on one enda sprocket pulley 53for said chain, and having secured on its oppo; siteend a planetary pinion 54 having teeth 55meshing with the cogs 56 on thegear. 57 which latter is loosely mounted on shaft 4 between the disk 35and the box 3. to and carried bygear 57 is a pulley 58 for transmittingvariable motion to the ma, chinery ormechanism. to be operated. I

In'Fig. 5 of the drawings it will be'seen. that the'pulleys 46, 48, 49.and 53 .are .ar-

ranged inside of the chain the position of which latter is indicated bythe dotted line 31 and that the drum althoughengaged thereby is locatedon the outer or opposite side of the chain from the pulleys, and thatthe chain and the pulleys have a planetary movement around the ,drumwhenthe disk 35 rotates.

The further operation of .our variable speed and reversing mechanism, asabove described, is as follows: Shaft 4 is caused. to rotate, in thedirection indicated, by applying suitable power to the pulley 6 or tothe shaft 4 in any other manner desired. Said rotary movement of theshaft 4 causes. a like movement of the pinion 34 which in turn engagesthe lobe gear 36 which being mounted on and secured to the disk 35causes the latter to rotate in thesame directionas the; shaft 4 andpulley 34. The engagement of; the gear 34 with the lobe gear 36, causesthei latter to engage the lobe gear 42 which latter engagement tendstoswingthe arm -44,and

pulley 46 towards the opposite end of the:

strap 47 or to the position indicated by the dotted lines 44*, 46 andthereby carrying the chain further around the drum, and; always keepingthe chain tight onthe drum? Loosel .rotate at variable speeds.

Secured.-

and pulleys. The planetary movement of the chain around thenon-rotatable drum,

and its engagement'with the teeth 32, as

axle 52 and the planetary pinion 54, which latter, -when the disk 35rotates, travels aroundthe. gear. 57 and causes the latter to Assumingthat the speed of the disk 35, is uniform. at all times the speedof thegear 57 may be varied. either by changing the diameter of the gear 57,the pinion 54, or the sprocket pulley 53, orby expanding vthe drum whichproportionately increases the speed. of the pinion 54, or bycontractingthe. drum whichproportionately decreases the speed of" thepinion 54. In operating a.working;model of our invention. madesubstantially. as shown and described we obtain thefollowing results:"

When .the. drum is expanded ..as shown in Fig. 1 the pinion 54' travelsaround thegear 57 without rotating the latter, and when the .drumiscontracte'dthe pinion 54 propor; tionately decreases its speed andtherefore pulls the gear 57around with it. .It is apparent that if, theypinion 54 did not rotate at all the speed of the disk 35 and gear 57would be equal.

yond the size first describedthat the rotation of the pinion54.would,proportionately increase and cause the gear 57. to rotate. inthe opposite direction to the disk 35. It is. seen.

therefore thatthe mechanism of our inven*1 tion enablesthe motion of thedriven element to be either increased or diminished or reversed,-orstopped without changing the speed of the. driving element. In theevent. of the. disk 35,running ahead of the driving";

power, the engagement of the shoe 40 with the inner face of the jawsprevents the arm 44 and pulley 46'from receding and loosening the chain.as they would otherwise do.

The construction of the machine of modi It iszfurther apparentthat ifthe. drum should'be. still further expanded be' has two separate shafts5 and 5" in place of the main shaft 4, and second that the-gear 57' iskeyed to and rotates with shaft '5, and third that the pulley 58 issubstituted for the pulley 58 and is secured on and rotates with theshaft 5.

Any suitable belt which can be operated without slipping onthe drum orpulley '53 .may be substituted for-the link chain.

Since certain other changes of construcwish to be confined to thespecific construction shown and described.

'Whatwe claim as new and desire to secure by LettersPatent, is

.tion might be madein our variable speed andv reversing mechanismwithout departing from c the spirit of our invention we do not 1. In avariable speed and reversing mechanism, a suitable support, a shafthaving bearings in said support, a non-rotatable drum mounted on saidsupport, a rotatable frame mounted on and driven from said shaft,pulleys mounted on and carried by said rotatable frame, one of saidpulleys having a rotatable axle extending through the rotatable frame, aplanetary pinion secured on the end of the axle opposite the pulleys, agear mounted on the shaft and meshing with said planetary pinion, and abelt having its inner face traveling on the pulleys and having itsopposite face engaging the drum.

2. In a machine of the character described, a suitable support, a shafthaving bearings in said support, a gear mounted on said shaft, arotatable frame mounted on and driven from said shaft, a vibrating armpivoted. to said frame, ulleys carried by said frame, one of saidpufleys having a rotatable axle, a pinion mounted on said axle andmeshing with and traveling around said gear, another one of said pulleysbeing mounted on said vibrating arm, means for vibrating the arm, anonrotatable drum surrounding said shaft, and a belt mounted on thepulleys and drum and traveling around the latter.

3. In a machine of the character described, a suitable support, a shafthaving bearings in said support, a gear loosely mounted on said shaft, arotatable frame mounted on and driven from said shaft, a vibrating armpivoted to said frame, pulleys carried by said frame, one of saidpulleys having a rotatable axle, a pinion secured on said axleandmeshing with and traveling around said gear, another one of saidpulleys being mounted on said vibrating arm, a nonrotatable drumsurrounding said shaft and secured to said support, and a belt mountedon the pulleys nd drum.

4. In a machine of the character described, a suitable support, a shafthaving bearings in said support, a gear mounted on said shaft, arotatable frame mounted on and driven from said shaft, pulleys mountedon the side of the frame opposite the gear, one of said pulleys having arotatable axle extending through the frame, a pinion mounted on saidaxle for engagement with said gear, a non-rotatable drum mounted on thesupport, means for causing the expansion and contraction of the drum, abelt mounted on the pulleys and drum, and means for automaticallyshifting the position of one of the pulleys relative to the expansionand contraction of the drum.

5. In a machine of the character described, a suitable support, a shafthaving bearings in said support, a wheel mounted on said shaft, arotatable frame mounted on and driven from said shaft, pulleys mountedon the side of the frame opposite the wheel, one of said pulleys havinga rotatable axle extending through the frame, means for connecting thesaid axle and wheel and for rotating the latter, a non-rotatableexpansible and contractible drum mounted on the support, means forcausing the expansion and contraction of the drum, a belt travelingaround the pulleys and engaging the drum, and means for automaticallyvarying the position of one of the pulleys relative to the drum for thepurpose described.

6. In means for connecting a driving element with a driven element andfor varying the speed of the driven element without changing the speedof the driving element, a suitable support, a shaft rotatably mounted insaid support and adapted to be connected with the driving element, arum-rotatable expansible and contractible drum surrounding the shaft andsecured to the support, a rotatable frame mounted on and connected withand driven from said shaft, pulleys rotatably mounted on one side of theframe, one of said pulleys having an axle rotatable therewith, a belttraveling on the pulleys and engaging the drum, and means for connecting the said axle with the element to be driven.

7. In a machine of the character described, a suitable support, a shafthaving bearings in said support, a gear mounted on said shaft, arotatable frame mounted on and driven from said shaft, pulleys mountedon and carried by said frame, one of said pulleys having a rotatableaxle, a pinion mounted on said axle and meshing with and travelingaround said gear, a non-rotatable drum surrounding said shaft andprovided in one face with radiating channels, a link belt mounted on thepulleys and drum, racks slidably arranged in said channels and providedon their outer ends with jaws forming a track to receive the belt, twoof said jaws being located opposite each other and provided with teethfor alternate engagement with the links of the belt, and means forsliding the racks in the channels.

In testimony whereof we aflix our signatures in presence of twowitnesses.

WILLIAM J. S'IEINLE. EDWARD M. STEINLE.

I/Vitnesses:

O. K. Tnnoo, lino B. LINCOLN.

